The Pro S-4, the most forgiving Mizuno Signature Series model, is engineered for players seeking the compact, player-preferred look, precision, and feel of a Mizuno Pro iron in a higher-launching, more playable cavity-back profile.

The S-4's elevated forgiveness and launch dynamics are achieved through increased offset, a wider sole, a lower sweet spot height, and a deeper center of gravity. These design elements, as well as head size and topline thickness, progressively shift throughout the set, with each iron receiving a unique, purpose-built profile. Flowing seamlessly from high-launching, forgiving long irons into precision and control-focused scoring irons, this progressive setup delivers optimal performance and shot-making from top to bottom.

Mizuno's Triple-Cut Sole further enhances playability in the S-4. Engineered for optimal turf interaction, this design efficiently moves the club through all types of turf and conditions, resulting in cleaner ball striking and greater control.

Like its Signature Series siblings, Mizuno's renowned forging expertise takes center stage in the S-4. Blending premium forged steel with a copper underlay, the S-4 delivers Mizuno's signature buttery soft yet responsive feel.

Mizuno finishes the S-4 with True Temper's Dynamic Gold Mid shaft and Golf Pride's Z-Grip.

Mizuno Pro S-4 Irons Feature:

• Designed for players seeking a compact cavity back profile with added forgiveness and a higher launch 
• Grain Flow Forged HD from a single billet of 1025SE Mild Carbon Steel in Japan for Mizuno's unmistakable soft feel and precise feedback
• Copper underlay enhances the soft, responsive feel that's synonymous with Mizuno Pro forged irons
• Increased offset, wider sole, and deeper CG than the Pro S-1 and S-3 for added confidence while promoting an easier launch and greater forgiveness
• Redesigned curved muscle cavity concentrates mass lower in the head to deliver increased forgiveness, a higher launch, and greater stability while maintaining the classic Mizuno Pro profile
• Progressive head geometries create high launching, forgiving long irons that transition into more compact, accurate short irons
• Triple Cut Sole, comprising a beveled leading and trailing edge, for smoother entry and exit through the turf
• Harmonic Impact Technology precisely tunes vibrations to create a solid, refined impact sensation
• Stock Shaft: True Temper Dynamic Gold Mid 115
• Stock Grip: Golf Pride Z-Cord